package edu.spec.lyq.week09.class1.classroom;

/**
 * \* User: 11028
 * \* Date: 2018/10/23
 * \* Time: 9:52
 * \* Description:
 */
public class TestString {
    public static void main(String[] args) {
        String s = "abcd";
        StringBuffer sbuf = new StringBuffer("abcd");
        StringBuilder sbui = new StringBuilder("abcd");
        System.out.println(s);
        sbuf.insert(2,"fg");
        System.out.println(sbuf);
        System.out.println(sbui);

    }
}
